When you're shopping for a lab balance or scale for a biological lab, the decision usually comes down to a pair of competing needs: resolving tiny mass differences or handling larger samples without losing accuracy. The A&D Electronics Precision Balance Scale Model FX300iN and the Mettler Toledo XSR1202S Precision Balance sit at opposite ends of that trade-off, and their prices are just as far apart. Here's how to pick between them.
Quick Verdict
Pick the A&D Electronics Precision Balance Scale Model FX300iN if you want an analytical balance at $330.00. Pick the Mettler Toledo XSR1202S Precision Balance if you need a top-loading precision balance and you're prepared to spend $1,999.00.
Comparison at a Glance
| Feature | A&D FX300iN | Mettler Toledo XSR1202S |
|---|---|---|
| Price | $330.00 | $1,999.00 |
| Capacity | 320 g | 1210 g |
| Readability | 0.001 g | 0.01 g |
| Balance type | Analytical | Top loading |
| Condition | New - open box | Used |
Where Each Product Stands Out
- The A&D FX300iN offers a fast 1-second stabilization time, which helps keep routine weighing tasks moving.
- The Mettler Toledo XSR1202S includes FACT automatic internal calibration and has been professionally inspected, cleaned, and tested, per the seller.
Product Notes
A&D Electronics Precision Balance Scale Model FX300iN
The A&D FX300iN is described as a legal-for-trade, high-resolution laboratory scale. It also claims a fast 1-second stabilization time, which helps keep weigh-and-record work moving. This is a new, open-box unit: the original box was discarded after the scale was assembled for a marketing video, and the paper directions are missing, so you'll need to download the manual online. A company asset tag sits on the bottom. For a lab that already keeps its documentation in digital form, the missing paper manual is easy to work around, and the bubble wrap used for shipping should protect the scale on its way to you. If a tight budget and a clean, never-used unit are your priorities, this balance offers a direct route into precision weighing without the intact packaging.
Mettler Toledo XSR1202S Precision Balance (1210 g / 0.01 g)
The Mettler Toledo XSR1202S brings FACT automatic internal calibration, so you don't have to rely on external weights if the balance drifts. The seller says it has been professionally inspected, cleaned, and tested, and that it's in exceptional cosmetic and working condition. This is a used unit, so it may already show handling; it comes from the XSR Excellence Series, which targets pharmaceutical, biotechnology, research, quality control, and industrial labs. That used condition is the main caveat for labs that prefer untouched equipment. If you need a dependable precision balance with self-calibration and a seller-backed check, this is the one to consider.
Final Choice by Use Case
For milligram-level analytical work with samples that stay within 320 g, the A&D FX300iN is the balance to buy, especially if you're comfortable downloading the manual instead of having a paper copy. For larger quantities up to 1210 g, where 0.01 g readability is sufficient, the Mettler Toledo XSR1202S is the stronger fit.
